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3 years ago

WILL MARK BRAINLIEST! Find the area of a circle with a radius of 7 feet ?

Mathematics

1 answer:

Murljashka [212]3 years ago

5 0

Answer:

A = 153.94 ft^2

Step-by-step explanation:

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1/4(24x+12)=6(x+1/2)

forsale [732]

Answer:

The final answer cannot be decided

Step-by-step explanation:

Since 1/4(24x+12)=6(x+1/2)

This can also be written as

24x+12/4=6(x+1/2)

So let's open the bracket from the right side and also solving using the LCM

24x+12/4=6(2x+1/2)

Open the bracket

24x+12/4=3(2x+1)

24x+12/4=6x+3

Cross multiply

24x+12=4(6x+3)

24x+12=24x+12

Collect like terms

24x-24x=12-12

0=0

Therefore the final answer cannot be decided

7 0

3 years ago

Which expression could be used to change 8 kilometers per hour to meters per minute

Ivahew [28]

8 km/jam
= 8000/60
= 133,3 m/menit

7 0

3 years ago

In order to estimate the average electric usage per month, a sample of 81 houses was selected and the electric usage was determi

lana [24]

Answer:

Confidence interval: (1760,1956)

Step-by-step explanation:

We are given the following information in the question:

Sample size, n = 81

Sample mean =

$\bar{x} = 1858 \text{ kWh}$

Population standard deviation =

$\sigma = 450 \text{ kilowatt-hours}$

Confidence Level = 95%

Significance level = 5% = 0.05

Confidence interval:

$\bar{x} \pm z_{critical}\displaystyle\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = \pm 1.96$

$1858 \pm 1.96(\displaystyle\frac{450}{\sqrt{81}} ) = 1858 \pm 98 = (1760,1956)$

6 0

3 years ago

What is the minimum of the function g(x)= x^2-6-12

Romashka-Z-Leto [24]

Answer:

Answer:

Step-by-step explanation:

Step-by-step Explanation:

8 0

3 years ago

What is the solution to 4/9*-10>*/3-12?

luda_lava [24]

The answer is 2 ( choose 2 )

and how we find this answer? the picture is clearly for that.

8 0

3 years ago